Template:Periodic table (standard atomic weight)

Standard atomic weight (abridged, conventional*)
	1	2	3		4	5	6	7	8	9	10	11	12	13	14	15	16	17	18
Group →
↓ Period
1	H 7000100800000000000♠1.008																		He7000400260000000000♠4.0026
2	Li7000694000000000000♠6.94	Be7000901220000000000♠9.0122												B 7001108100000000000♠10.81	C 7001120110000000000♠12.011	N 7001140070000000000♠14.007	O 7001159990000000000♠15.999	F 7001189980000000000♠18.998	Ne7001201800000000000♠20.180
3	Na7001229899999999999♠22.990	Mg7001243050000000000♠24.305												Al7001269820000000000♠26.982	Si7001280850000000000♠28.085	P 7001309740000000000♠30.974	S 7001320600000000000♠32.06	Cl7001354500000000000♠35.45	Ar7001399480000000000♠39.948
4	K 7001390980000000000♠39.098	Ca7001400780000000000♠40.078(4)	Sc7001449560000000000♠44.956		Ti7001478670000000000♠47.867	V 7001509420000000000♠50.942	Cr7001519960000000000♠51.996	Mn7001549380000000000♠54.938	Fe7001558450000000000♠55.845(2)	Co7001589330000000000♠58.933	Ni7001586930000000000♠58.693	Cu7001635460000000000♠63.546(3)	Zn7001653800000000000♠65.38(2)	Ga7001697230000000000♠69.723	Ge7001726300000000000♠72.630(8)	As7001749220000000000♠74.922	Se7001789710000000000♠78.971(8)	Br7001799040000000000♠79.904	Kr7001837980000000000♠83.798(2)
5	Rb7001854680000000000♠85.468	Sr7001876200000000000♠87.62	Y 7001889060000000000♠88.906		Zr7001912240000000000♠91.224(2)	Nb7001929060000000000♠92.906	Mo7001959500000000000♠95.95	Tc[98]	Ru7002101070000000000♠101.07(2)	Rh7002102910000000000♠102.91	Pd7002106420000000000♠106.42	Ag7002107870000000000♠107.87	Cd7002112410000000000♠112.41	In7002114820000000000♠114.82	Sn7002118710000000000♠118.71	Sb7002121760000000000♠121.76	Te7002127600000000000♠127.60(3)	I 7002126900000000000♠126.90	Xe7002131289999999999♠131.29
6	Cs7002132910000000000♠132.91	Ba7002137330000000000♠137.33	La7002138910000000000♠138.91		Hf7002178490000000000♠178.49(2)	Ta7002180950000000000♠180.95	W 7002183840000000000♠183.84	Re7002186210000000000♠186.21	Os7002190230000000000♠190.23(3)	Ir7002192220000000000♠192.22	Pt7002195080000000000♠195.08	Au7002196970000000000♠196.97	Hg7002200590000000000♠200.59	Tl7002204380000000000♠204.38	Pb7002207200000000000♠207.2	Bi7002208980000000000♠208.98	Po[209]	At[210]	Rn[222]
7	Fr[223]	Ra[226]	Ac[227]		Rf[267]	Db[268]	Sg[269]	Bh[270]	Hs[270]	Mt[278]	Ds[281]	Rg[282]	Cn[285]	Nh[286]	Fl[289]	Mc[290]	Lv[293]	Ts[294]	Og[294]
					Ce7002140120000000000♠140.12	Pr7002140910000000000♠140.91	Nd7002144240000000000♠144.24	Pm[145]	Sm7002150360000000000♠150.36(2)	Eu7002151960000000000♠151.96	Gd7002157250000000000♠157.25(3)	Tb7002158930000000000♠158.93	Dy7002162500000000000♠162.50	Ho7002164930000000000♠164.93	Er7002167260000000000♠167.26	Tm7002168930000000000♠168.93	Yb7002173050000000000♠173.05	Lu7002174970000000000♠174.97
					Th7002232040000000000♠232.04	Pa7002231040000000000♠231.04	U 7002238030000000000♠238.03	Np[237]	Pu[244]	Am[243]	Cm[247]	Bk[247]	Cf[251]	Es[252]	Fm[257]	Md[258]	No[259]	Lr[266]
* Standard atomic weight					The formal standard atomic weight may look like 4.002602(2) for helium, and [1.0078, 1.0082] for hydrogen. The "(n)" is the uncertainty.
Abridged					The value is abridged to five significant figures. The ± uncertainty is noted as "(x)", or "(1)" when omitted. See abridged standard atomic weight.
Conventional					When the formal standard atomic weight is an interval, like [1.0078, 1.0082], a simple, single number is published too. See conventional standard atomic weight.
* Mass number					Unstable elements do not have a standard atomic weight. These have the mass number shown of the most stable isotope (formatted [210]).

Legend for the periodic table

Primordial  From decay  Synthetic Border shows natural occurrence of the element

Background color shows subcategory in the metal–metalloid–nonmetal trend:

Metal						Metalloid	Nonmetal			Unknown chemical properties
Alkali metal	Alkaline earth metal	Lan­thanide	Actinide	Transition metal	Post-​transition metal		Reactive nonmetal	Noble gas

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